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V. BENDIXIv ENGINE STARTER.

TloN FILED DE 18 APPLICA C. 1918. I 1,354,157, Patendsept. 28,1926., A 2 SSSSSSS SiEET 2.

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ENGINE-STARTER.

To all wir/omit may concern: e

Be it known that I, VINCENT BENDIX, a citizen of the United States, residing at Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Engine-Starters, of which the following is a specication.

My invention relates to a starter for an engine such as a gas engine .and the like and the object thereof is to provide a simple, eflicient and reliable device of this character. My starter is of that type exemplified in patents heretofore issued to me, for instance, Patent No. 1,116,370 dated November 10, 1914, and Patent No. 1,125,935 dated d anuary 26, 1915, which starter is characterized by a prime mover such as an. electric motorR and a transmission or drive for transmitting the power of the motor by means lof a-rotatable shaft, such as a screw shaft, and a driving member such as a pinion mounted thereon, to a memberof the engine to beL started, such as the ily wheel thereof.

My present invention is concerned with the transmission ordrive of such an engine e starter and consists in the provision 0f simple and elhcient mechanism whose features of advantage 4and utility will be understood from the description hereinafter given. ln the drawingsFigure 1 is an elevation partly in section of an engine starter embodyingv my invention; and Fig. 2 is a section on the line 2--2 of Fig. 1; and Figs. 3 and views similar to Figs. 1 and 2 in re-A spect to a modified formof construction.

Referring tothe embodiment of my invention as herein shown, the startingamotor which is an electric motor and is represented in part at A is here provided with an extend#` ed armature shaft 1v on whose outer end is screwed a stop nut 2 which by preference is more `edectually held thereon by the cross pin 3. t.

To the` inner end of this extended armature shaft which forms a ydriving shaft there -is secured a driving head 4 by suitable means such as the key 5. Thisvhead is in the form of a disk of two diameters whereby there is formed on the outer side-anannular space for the purpose' of receiving a coiled drivingspring 6 of the clock springtype,

` the. screw shaft.

Speccation of Letters Patent. Pam'gmmgd Sgp-,o 28, 192th,

p Application led December 18, 1918. Serial 210,267,281.

/fforthe driving head and the spring and acting asY a means of attachment for the outer end of the spring. As shown, this driven head has an enlarged base portion 9 and a shell or inclosing portion 1() within which both thedriving head and the driving spring are contained. The outer i end of this spring `is attached at 11 to the innerlside of said shell portion. As a result this spring acts as a yielding drivingconnection between the motor and its shaft and the screw shaft in order to accomplish the same general re` sults set forth in my patents aforesaid.

Upon the screw threaded portion of the screw shaft there is screw threaded the driving member or pinion 12 provided with the weighted disk 13 and adapted to mesh with a rotatable part of the engine to be started such as the teeth 14- of the fly wheel 14.

The parts are shown in Fig. 1 in their 1 driving position, that is, the pinion is in mesh with the fly wheel and adapted to y drive the fly wheel when the motor is operated. Describing a cycle of operation and starting with the pinion in its normal posic tion as shown in dotted lines, this pinion is automatically advanced inwardly into mesh with the dy wheel as the result of the operation of the motor and consequent rotation of the screw shaft or sleeve- 8.l lf] hen the pinion has reached the limit of its inward movement and is in full mesh with the fly wheel asV shown in full lines it will partake of the rotary motion of its screw shaft and will thereupon rotate the fly wheel and i.

cause ther engine to be started. When the engine has started'on its own power,A the pinion `will be automatically demeshed and re'- turned to its, normal or home position on The drive'from the motor' to the screw shaft is thus through the driving spring 6 and consequently the power is transmitted resiliently, and different conditions encountered in actual practice, particularly the condition knowny as going over compression points is fully taken care of by this driving spring and the pinion is therefore held in proper full mesh lwith the fly wheel during this time and prevented from vibrating.

Moreoverthe spring absorbs the shock incident .to the rather sudden changejfrom shaft for rotary movement therewith `and with respect thereto, also for longitudinal movement thereof, a driving member on the sleeve, a drive spring between the two heads, and a stop nut on the outerend of the shaft for limiting the longitudinahmovement of 'the sleeve thereon.

9." In an engine starter, a drive or transmission comprising a driving shaft, a driving head secured thereto, a sleeve mounted on the shaft for rotary movement therewith and also with respect thereto and having a driven head copef'ating Avviith the other head, said sleeve having a screw threaded portion, a spring coperating with the two heads and forming a driving connection between them,l a pinion screwV threaded on the sleeve for longitudinal ing head which is secured thereto and which is in the form of a disk of two. diameters, thereby providing an annular space, a sleeve mounted on theshaft and having at oneend a screw threaded portion and` at its other end a driven head in the ormof a sleeve or flanged disk inclosing the driving head, the sleeve and its head beingA mounted on the shaft for longitudinal movement and the flange of such head being extended to always cover the driving head or disk regardless of such movement, a\ springof the clock-spring type located in said annular space and anchored to the two heads to form a driving connection between them. and a driving member mounted on said screw threaded portion of the sleeve.

VlNCENT BENDX.

E. M. BENNETT. REFLECTING LAMP SHADE AND GLOBE. APPLICATION FILED nmzo, Isls.

Patentedept. 28, 1920. 

